The LCM is 1848.
42:42,84,126,168,210,252,294,336,378,420,462 66:66,132,198,264,330,396,462
The Least Common Multiple (LCM) for 66 10 42 is 2,310.
The Least Common Multiple (LCM) for 21 42 66 1500 is 115,500
462
Unless there is a common factor, LCM is the product. 42 = 2 x 3 x 7; 66 = 2 x 3 x 11. There are common factors of 2 and 3 so one occurrence is to be ignored when multiplying ie 2 x 3 x 7 x 11 so LCM = 462 (11 x 42, 7 x 66)
The LCM is 66.
The LCM is 42.
The LCM is 42.
The LCM is: 66
The LCM is 66.
The LCM is 528.